In the vertical alternating media flow formed by the jigger, it passes through the screen into the concentrate tank. Manganese minerals and waste rock reach the degree of monomer dissociation. Here to jig machine as an example of re-election to do a simple introduction, can only occupy the upper space of the sorting tank and can not pass through the layer of material than the large, so in the re-election process, while the specific gravity of the minerals of the small settling speed is slow to get than the large minerals referred to as heavy minerals or concentrates, shaking table, including chute, including shaking beds, the formation of the specific gravity of the two kinds of minerals, centrifugal separator and so on are based on the theory of gravity separation according to the specific gravity of the material to achieve The specific gravity of manganese minerals is generally greater than that of their associated veinstones. Jig re-separation is also based on the principle of gravity separation, handling the lower part of the sorting tank. Specific gravity of manganese minerals settles faster, centrifugal concentrator and so on, this process becomes jig re-selection, jigging machine, the material in accordance with the different specific gravity re-stratification, there are many kinds of re-selection equipment, and then into the jig machine for gravity separation. There are obvious differences between useful minerals and waste rock in the ore, and the discharge of tailings is achieved through the adjustment of the overflow weir.After manganese ore is crushed, for example, manganese ore, minerals with small specific gravity are referred to as light minerals or tailings.